Fix GetOrigin in the PPAPI browser interface implementation. AsString() should be called on a Var that of string type, not of non-string type.  Review URL: http://codereview.chromium.org/2825064
Fix GetOrigin in the PPAPI browser interface implementation. AsString() should
be called on a Var that of string type, not of non-string type. 
Review URL: http://codereview.chromium.org/2825064

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@2767 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client